Published September 2000 | Version v1
Journal article Metadata-only

Synthesis of dicyclopentadienydmagnesium catalyzed by vanadium compounds

Creators

  • 1. Nizhegorodskij Gosudarstvennyj Univ. im. N.I. Lobachevskogo, NII Khimii, Nizhnij Novgorod (Russian Federation)

Description

Formal-kinetic regularities in formation of dicyclopentadienydmagnesium catalyzed by vanadium compounds during magnesium oxidation in system VCl3-Mg-THF-CpH (THF - tetrahydrofuran, CpH - cyclopentadienyl) are ascertained. Certain intermediate products of the reaction, vanadocene inclusively, are identified by the ESR method. Thermodynamic parameters of vanadium trichloride adsorption on magnesium surface are determined. The values of adsorption enthalpy and entropy at 303 K proved -26 ± 4 kJ/mol and -80 ± 8 J/(mol · K) respectively

Abstract (Russian)

Установлены формально-кинетические закономерности катализируемого соединениями ванадия образования лициклопентадиенида магния при окислении магния в системе VCl3-Mg-ТГФ-CpH (ТГФ - тетрагидрофуран, СрН - циклопентадиен). Методом ЭПР идентифицирован ряд промежуточных продуктов реакции, в том числе ванадоцен. Определены термодинамические параметры адсорбции трихлорида ванадия на поверхности магния. Значения энтальпии и энтропии адсорбции при 303 К составили соответственно -26 ± 4 кДж/моль и -80 ± 8 Дж/(моль · K)

Additional details

Additional titles

Original title (Russian)
Katalizirovannyj soedineniyami vanadiya sintez ditsiklopentadienida magniya

Publishing Information

Journal Title
Zhurnal Obshchej Khimii
Journal Volume
70
Journal Issue
9
Journal Page Range
p. 1567-1570
ISSN
0044-460X
CODEN
ZOKHA4

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32017726
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ADSORPTION HEAT; CATALYSIS; CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; CYCLOPENTADIENE; ELECTRON SPIN RESONANCE; ENTROPY; MAGNESIUM; REACTION INTERMEDIATES; SOLUTIONS; SPECTRA; TETRAHYDROFURAN; VANADIUM CHLORIDES
Descriptors DEC
ALKALINE EARTH METALS; ALKENES; CHLORIDES; CHLORINE COMPOUNDS; CYCLOALKENES; DIENES; DISPERSIONS; ELEMENTS; ENTHALPY; FURANS; HALIDES; HALOGEN COMPOUNDS; HETEROCYCLIC COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROCARBONS; KINETICS; MAGNETIC RESONANCE; METALS; MIXTURES; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; POLYENES; REACTION KINETICS; RESONANCE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS

Optional Information

Notes
16 refs., 3 figs.